ExploitedNot in CISA KEV yetFix available

CVE-2026-106931

Q: Is CVE-2026-106931 actively exploited?

Yes. CVE-2026-106931 has been observed in active exploitation according to SSVC analysis.

Q: What is the CVSS score for CVE-2026-106931?

CVE-2026-106931 has a CVSS v3 base score of 7.8 (HIGH severity), with vector string CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Exploitation confirmed.

Published2026-10-14
Fixed in8.00 · 7.00 · 3.10
WeaknessCWE-78

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

SiteGuard Server Edition contains an OS command injection vulnerability, which may allow an attacker to execute arbitrary OS commands with root or SYSTEM privileges on the system running the affected product.

Timeline

dates in UTC

2026-10-1405:16CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 15:37 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2026-106931?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2026-106931?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD

E-guardian siteguardversion to verify

Branch	Affected	Fixed in	Source
8.0	≥ 2.20, < 8.00	8.00	NVD
8.0	≥ 4.10, < 8.00	8.00	NVD
7.0	≥ 2.20, < 7.00	7.00	NVD
3.10	≥ 2.20, < 3.10	3.10	NVD
8.0	= 8.00	no fix published	NVD
7.0	= 7.00	no fix published	NVD

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

Update E-guardian siteguard to 8.00 · 7.00 · 3.10

Advisories and patches

www.eg-secure.co.jpVendor Advisory

Detection

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: none listed

Sources

NVDCVE recordread 2026-10-23
CISA-ADPSSVC decisionactive2026-10-20
OpenCVESSVC decisionactive—
CNACVSS 4.08.5read 2026-10-23
CNACVSS 3.07.8read 2026-10-23
CNAweakness (CWE)CWE-78read 2026-10-23

Technical details

CVSS v3 Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS 4.0 vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Published: 2026-10-14
Last Modified: 2026-10-21
NVD status: Analyzed

Frequently asked questions

What is CVE-2026-106931?

Is CVE-2026-106931 actively exploited?

Yes. CVE-2026-106931 has been observed in active exploitation according to SSVC analysis.

What is the CVSS score for CVE-2026-106931?

CVE-2026-106931 has a CVSS v3 base score of 7.8 (HIGH severity), with vector string CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

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